I don't think people realize how much of things like the tax code are basically code patches to law to fix exploitable bugs.

Capitalism isn't exploiting anything. People make the laws, people operate businesses.

It isn't clear to me that these concerns are absent under any other system -- in fact I would argue that capitalism paired with a liberal representative democracy and strong individual rights is the best system for addressing any concerns.

I don't think capitalism is "wrong" for finding an exploit, but those liberal representative democracies should realize that turning retired power plants into miners is bad, and pass laws to prevent that business model from working.

Why impugn "capitalism" when you could have just said that the business model has negative consequences that should be addressed via legislation?

I was reacting to the non-sequitur that you were suggesting that somehow capitalism was at fault in this situation.